AI & the web
DMARC
An email-authentication framework connecting domain alignment, handling policies and reports with SPF and DKIM.
In everyday use
A domain publishes instructions for receiving servers handling messages that fail its authentication requirements.
What to keep in mind
Authentication supports protection against impersonation; it does not promise delivery or remove the need for consent.
Also searched as: Domain-based Message Authentication Reporting and Conformance
Further reading
Original explanation and example by Perspectism. Further reading may cover the wider subject, rather than this exact wording. Edition updated 7 October 2026.
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